JPS6361602A - Radial tire having better eccentric-abrasion resistance - Google Patents
Radial tire having better eccentric-abrasion resistanceInfo
- Publication number
- JPS6361602A JPS6361602A JP61204665A JP20466586A JPS6361602A JP S6361602 A JPS6361602 A JP S6361602A JP 61204665 A JP61204665 A JP 61204665A JP 20466586 A JP20466586 A JP 20466586A JP S6361602 A JPS6361602 A JP S6361602A
- Authority
- JP
- Japan
- Prior art keywords
- rubber
- hardness
- base rubber
- cap
- base
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000005299 abrasion Methods 0.000 title abstract description 5
- 229920001971 elastomer Polymers 0.000 claims abstract description 114
- 239000005060 rubber Substances 0.000 claims abstract description 114
- 239000000203 mixture Substances 0.000 claims abstract description 19
- 239000006229 carbon black Substances 0.000 claims abstract description 10
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229920003002 synthetic resin Polymers 0.000 claims abstract description 9
- 239000000057 synthetic resin Substances 0.000 claims abstract description 9
- 229920003986 novolac Polymers 0.000 claims description 2
- 229920005989 resin Polymers 0.000 claims description 2
- 239000011347 resin Substances 0.000 claims description 2
- DGXAGETVRDOQFP-UHFFFAOYSA-N 2,6-dihydroxybenzaldehyde Chemical compound OC1=CC=CC(O)=C1C=O DGXAGETVRDOQFP-UHFFFAOYSA-N 0.000 claims 1
- 235000019241 carbon black Nutrition 0.000 abstract 2
- 230000020169 heat generation Effects 0.000 description 11
- 238000000926 separation method Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 230000007423 decrease Effects 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- VKYKSIONXSXAKP-UHFFFAOYSA-N hexamethylenetetramine Chemical compound C1N(C2)CN3CN1CN2C3 VKYKSIONXSXAKP-UHFFFAOYSA-N 0.000 description 2
- 239000012779 reinforcing material Substances 0.000 description 2
- 229920003048 styrene butadiene rubber Polymers 0.000 description 2
- 229920001875 Ebonite Polymers 0.000 description 1
- 244000043261 Hevea brasiliensis Species 0.000 description 1
- 229920000877 Melamine resin Polymers 0.000 description 1
- MBHRHUJRKGNOKX-UHFFFAOYSA-N [(4,6-diamino-1,3,5-triazin-2-yl)amino]methanol Chemical compound NC1=NC(N)=NC(NCO)=N1 MBHRHUJRKGNOKX-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 150000001299 aldehydes Chemical class 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000007859 condensation product Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- WSFSSNUMVMOOMR-UHFFFAOYSA-N formaldehyde Substances O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000004312 hexamethylene tetramine Substances 0.000 description 1
- 235000010299 hexamethylene tetramine Nutrition 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229920003052 natural elastomer Polymers 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- 229920001195 polyisoprene Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 230000002747 voluntary effect Effects 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
- B60C11/0041—Tyre tread bands; Tread patterns; Anti-skid inserts comprising different tread rubber layers
- B60C11/005—Tyre tread bands; Tread patterns; Anti-skid inserts comprising different tread rubber layers with cap and base layers
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Tires In General (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明はトレッド部の偏摩耗が少く、トレッドゴムの発
熱が小で耐久性の大なるラジアルタイヤに関するもので
ある。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a radial tire that exhibits less uneven wear in the tread portion, less heat generation in the tread rubber, and greater durability.
タイヤは、高荷重で、高スリップで旋回する頻度の高い
走行条件で、長時間にわたり走行すると、タイヤのトレ
ッドのショルダ一部が早期摩耗する肩落ち摩耗や、セン
ターリブの端部が局部摩耗するリバーウェア現象等の偏
摩耗が発生し、タイヤの摩耗寿命が短くなり、又、外観
の悪化等の問題がある。When tires are driven for long periods of time under high load, high slip and frequent turning conditions, the shoulders of the tire tread may wear down prematurely, and the edges of the center rib may wear locally. Uneven wear such as the river wear phenomenon occurs, shortening the wear life of the tire and causing problems such as deterioration in appearance.
スチレン−ブタジェンゴムを主体とするゴム組成物をト
レッドゴムとして用いると、偏摩耗の防止には成る程度
効果はあるが、このトレッドゴム組成物は発熱温度が高
く、走行時にタイヤのトレッド部が高温となり、セパレ
ーションが発生して、タイヤの耐久性が低下するという
欠点がある。When a rubber composition mainly composed of styrene-butadiene rubber is used as tread rubber, it is effective to some extent in preventing uneven wear, but this tread rubber composition has a high heat generation temperature, and the tread part of the tire becomes hot during running. This has the disadvantage that separation occurs and the durability of the tire decreases.
そこで偏摩耗の防止とセパレーションの防止を両立させ
るために、特開昭５８−８０６０２号には、トレッド溝
の周囲のみを耐摩耗性の高いゴムで構成することが提案
され、また、特開昭５６−１２８２０１号に示すように
、トレッドのキャップゴムとして、スチレン−ブタジェ
ンゴムに液状ポリマーを配合して、比較的硬く、耐偏摩
耗性の高いゴム組成物を用い、トレッドのベースゴムと
して、天然ゴム、ポリイソプレンゴムを主成分トする比
較的軟く、発熱の小さいゴム組成物を用いてセパレーシ
ョンを防止する方法が提案されている。Therefore, in order to prevent uneven wear and separation at the same time, it was proposed in JP-A-58-80602 that only the periphery of the tread groove be made of highly wear-resistant rubber. As shown in No. 56-128201, the cap rubber for the tread is a relatively hard and unevenly wear-resistant rubber composition made by blending styrene-butadiene rubber with a liquid polymer, and the base rubber for the tread is natural rubber. A method has been proposed for preventing separation using a relatively soft rubber composition that mainly contains polyisoprene rubber and generates little heat.
従来のタイヤのトレッドの溝の周囲又はキャップゴムの
みを、耐偏摩耗性の大なるゴム組成物で構成し、ベース
ゴム等、トレッドのその他の部分を低発熱性のゴムで構
成した場合には、タイヤの使用の中〜末期にベースゴム
がトレッド表面に露出してくると、急激な摩耗、偏摩耗
が発生し、却ってタイヤの寿命が低下するという問題点
があった。If only the periphery of the tread groove or cap rubber of a conventional tire is made of a rubber composition with high uneven wear resistance, and the other parts of the tread, such as the base rubber, are made of low heat generation rubber. However, when the base rubber is exposed on the tread surface during the middle to final stages of tire use, rapid wear and uneven wear occur, which actually shortens the life of the tire.
従って本発明は、従来のラジアルタイヤの上記欠点に鑑
み、耐偏摩耗性が高く、且つ低発熱性で、セパレーショ
ンの発生の少い、耐久性の大なるトレッドを有するラジ
アルタイヤを提供することを目的とする。Therefore, in view of the above-mentioned drawbacks of conventional radial tires, it is an object of the present invention to provide a radial tire having a tread with high resistance to uneven wear, low heat generation, little separation, and high durability. purpose.
上記目的を達成すべく本発明者らが研究を重ねた結果、
キャップ−ベースの２層構造を有するタイヤのトレッド
において、従来はキャップゴムとして、硬く、耐摩耗性
が大なるゴムを用い、ベースゴムとして、軟く発熱の小
さいゴムを用いていたものを、発想を転換し、従来とは
全く逆に、キャップゴムとして軟いゴムを用い、ベース
ゴムとして従来のベースゴムよりも硬いゴムを用いるこ
とにより、硬いベースゴムによりキャップゴムの動きが
制限され、偏摩耗を防°止しうろことを見出した。そし
てこの場合、軟いキャップゴムは、従来の硬いキャップ
ゴムよりも、耐摩耗性は若干劣るが、全体が均一に摩耗
し、偏摩耗が発生しないため、タイヤ全体の摩耗寿命は
却って改善されること、及び、ベースゴムとしてフェノ
ール系合成樹脂を配合したゴム組成物を用いることによ
り、硬いベースゴムであってもその発熱を低くおさえ、
セパレーションを防止しうることを見出し、本発明を完
成するに到った。As a result of repeated research by the present inventors to achieve the above purpose,
In tire treads with a two-layer cap-base structure, the conventional method used hard rubber with high wear resistance as the cap rubber, and soft rubber with low heat generation as the base rubber. By using a softer rubber as the cap rubber and a harder rubber than the conventional base rubber as the base rubber, the hard base rubber restricts the movement of the cap rubber and reduces uneven wear. We have discovered that scales can prevent this. In this case, although the soft cap rubber has slightly lower wear resistance than the conventional hard cap rubber, the entire tire wears evenly and uneven wear does not occur, so the wear life of the tire as a whole is actually improved. In addition, by using a rubber composition containing phenolic synthetic resin as the base rubber, even if the base rubber is hard, the heat generation can be kept low.
It was discovered that separation can be prevented, and the present invention was completed.
即ち本発明は、トレッドゴムがトレッド表面部分のキャ
ップゴムとベルトに接する部分のベースゴムの２層構造
よりなるラジアルタイヤにおいて、該キャップゴムのシ
ョアーＡ硬度Ｈａ及びベースゴムのショアーＡ硬度ＨＢ
が
５５≦Ｈｃ≦７５
５０≦ＨＢ≦８０
０、９ ＜ＨＢ／ＨＯ＜ １．２
の条件を満たし、該ベースゴムがゴム分１００ 重量部
に対し、カーボンブラック３０〜７０ Ｍ 置部、フェ
ノール系合成樹脂０．１〜１０重量部を含むゴム組成物
により構成されたことを特徴とする、耐偏摩耗性の優れ
たラジアルタイヤを要旨とする。That is, the present invention provides a radial tire in which the tread rubber has a two-layer structure of a cap rubber on the tread surface portion and a base rubber on the portion in contact with the belt, in which the Shore A hardness Ha of the cap rubber and the Shore A hardness HB of the base rubber are
satisfies the following conditions: 55≦Hc≦75 50≦HB≦80 0,9 <HB/HO<1.2, and the base rubber contains 30 to 70 M of carbon black and phenolic based on 100 parts by weight of rubber. The gist of this invention is a radial tire with excellent uneven wear resistance, characterized by being made of a rubber composition containing 0.1 to 10 parts by weight of a synthetic resin.
第１図は本発明のラジアルタイヤの一例の断面図である
。カーカス（１）の外側に隣接してベルト（２）を設け
、トレッドゴム（３）はベルト（２）に接するベースゴ
ム（４）とその外側のキャップゴム（５）の２層よりな
る。FIG. 1 is a sectional view of an example of the radial tire of the present invention. A belt (2) is provided adjacent to the outside of the carcass (1), and the tread rubber (3) is composed of two layers: a base rubber (4) in contact with the belt (2) and a cap rubber (5) on the outside thereof.
本発明のラジアルタイヤのトレッドのキャップゴムはシ
ョアーＡ硬度が５５〜７５の範囲であることが必要であ
り、更に好ましくは６０〜７０の硬度の範囲のゴム組成
物が用いられる。キャップゴムのショアーＡ硬度が５５
未満ではキャップゴムの耐摩耗性が低下し、タイヤの摩
耗寿命が低下する。またキャップゴムのショアーＡ硬度
が７５を越えると発熱が大きくなり、セパレーションの
原因となる。キャップゴムの硬度をこの範囲に調節する
ためには、そのゴム組成物のカーボンブラックの配合量
は、ゴム分１００重量部に対し４０〜９０重量部とする
のがよい。The cap rubber for the tread of the radial tire of the present invention needs to have a Shore A hardness in the range of 55 to 75, and more preferably a rubber composition having a hardness in the range of 60 to 70. Shore A hardness of cap rubber is 55
If it is less than that, the abrasion resistance of the cap rubber decreases and the wear life of the tire decreases. Furthermore, if the Shore A hardness of the cap rubber exceeds 75, heat generation will increase, causing separation. In order to adjust the hardness of the cap rubber within this range, the amount of carbon black in the rubber composition is preferably 40 to 90 parts by weight per 100 parts by weight of rubber.
本発明のタイヤのトレッドのベースゴムはショアーＡ硬
度が５０〜８０の範囲にあることを要し、更に好ましく
は６５〜７５の範囲のゴム組成物が用いられる。ベース
ゴムの硬度が５０より小さいと偏摩耗が生じやすく、ベ
ースゴムの硬度を８０より大きくするためには、カーボ
ンブラックを多量に配合する必要があり、その結果発熱
が大きくなり、セパレーションが発生しやすくなる。The base rubber of the tread of the tire of the present invention must have a Shore A hardness in the range of 50 to 80, more preferably a rubber composition having a Shore A hardness in the range of 65 to 75. If the hardness of the base rubber is less than 50, uneven wear is likely to occur.In order to increase the hardness of the base rubber to more than 80, it is necessary to incorporate a large amount of carbon black, which results in increased heat generation and separation. It becomes easier.
またベースゴムとキャップゴムの硬度の比ＨＢ／Ｈａが
０．９以下ではベースゴムの硬度によりキャップゴムの
動きを抑制する効果が小さく、偏摩耗が発生しやすく、
又Ｈｓ／ＨＣが１．２以上になると、ベースゴムの硬度
を大きくしてモ、ベースゴムに較ベキャップゴムが遥か
に軟かいため、ベースゴムの硬度によりキャップゴムの
動きを抑制する効果が小さく、ベースゴムの硬度を大き
くしたためにその発熱が大きくなる不利益のみが表われ
、好ましくない。従って、０．９ ＜ＨＢ ／ＨＣ＜１
．２の範囲が好ましく、更に好ましくは１ ＜ ＨＢ／
Ｈａ＜１．２の範囲である。Furthermore, if the hardness ratio HB/Ha between the base rubber and the cap rubber is less than 0.9, the hardness of the base rubber will have little effect in suppressing the movement of the cap rubber, and uneven wear will likely occur.
Also, when Hs/HC becomes 1.2 or more, the hardness of the base rubber is increased, and since the cap rubber is much softer than the base rubber, the hardness of the base rubber has the effect of suppressing the movement of the cap rubber. If the hardness of the base rubber is small, the disadvantage is that the heat generation increases due to the increased hardness of the base rubber, which is not preferable. Therefore, 0.9<HB/HC<1
．． The range is preferably 2, more preferably 1 < HB/
The range is Ha<1.2.
ベースゴムとキャップゴムの厚みの比は特に制限はない
が、ベースゴムの厚みを大にした方が、偏摩耗を防止す
る効果が大きい。Although there is no particular restriction on the ratio of the thickness of the base rubber to the cap rubber, the greater the thickness of the base rubber, the greater the effect of preventing uneven wear.
本発明のラジアルタイヤのベースゴムに用いられるゴム
組成物は、補強材として、カーボンブラック及びフェノ
ール系合成樹脂を含むものが硬度が大きくても発熱が比
較的小さく、セパレーションの防止に効果がある。ベー
スゴムのカーボンブラックの配合量は、ゴム分１００重
量部に対し、３０〜７０重量部が好ましく、カーボンブ
ラックが３０重量部未満では必要な硬度を与えることが
できず、７０重量部を超えると発熱が大となり不適当で
ある。The rubber composition used for the base rubber of the radial tire of the present invention, which contains carbon black and a phenolic synthetic resin as a reinforcing material, generates relatively little heat even if it has high hardness and is effective in preventing separation. The amount of carbon black in the base rubber is preferably 30 to 70 parts by weight based on 100 parts by weight of the rubber. If carbon black is less than 30 parts by weight, the required hardness cannot be provided, and if it exceeds 70 parts by weight, It is inappropriate as it generates a lot of heat.
ベースゴムに配合するフェノール系合成樹脂はフェノー
ル類とアルデヒドの縮合物であって、例えばノボラック
型レゾルミン−ホルムアルデヒド樹脂が用いられ、その
硬化剤としてヘキサメチレンテトラミン、メラミン、メ
チロールメラミン等を添加して用いられる。The phenolic synthetic resin blended into the base rubber is a condensation product of phenols and aldehydes, and for example, novolac type resolmin-formaldehyde resin is used, and hexamethylenetetramine, melamine, methylolmelamine, etc. are added as a curing agent. It will be done.
表１１に示す配合のゴム組成物について加硫後のショア
ーＡ硬化を測定しその結果を第１表に示す。The Shore A cure after vulcanization was measured for the rubber compositions having the formulations shown in Table 11, and the results are shown in Table 1.
また、グツドリッチフレクツメータで発熱５告度を測定
しその結果を第１表に示す。更にピコ試験機を用いＡＳ
ＴＭＤ２２２８に定められた条件で摩耗試験を行った結
果を同様に第１表に示す。In addition, the degree of heat generation was measured using a Gudrich flexmeter and the results are shown in Table 1. Furthermore, AS using a pico tester
Table 1 also shows the results of a wear test conducted under the conditions specified in TMD2228.
第１表に示すゴム組成物をタイヤのトレッドのキャップ
ゴム及びベースゴムとして用い、タイヤサイズ１０．０
０几２０ １４ＰＲの第１図に示す本発明のラジアルタ
イヤを製造し、ドラムテストおよび実走テストを行い、
その結果を実施例１〜４として第２表に示す。The rubber composition shown in Table 1 was used as the cap rubber and base rubber of a tire tread, and the tire size was 10.0.
The radial tire of the present invention shown in FIG.
The results are shown in Table 2 as Examples 1 to 4.
また第１表のゴム組成物のうち、Ａ、 Ｆ、 Ｇ。Also, among the rubber compositions in Table 1, A, F, and G.
Ｈのゴムを用いて、実施例と同じサイズのタイヤを製造
し、同様のテストを行い比較例１〜３として第２表に示
す。Using the rubber of No. H, tires of the same size as those in the examples were manufactured, and the same tests were conducted and the results are shown in Table 2 as Comparative Examples 1 to 3.
上記ドラムテストは米国自動車安全基準（ＦＭＶＳＳ）
１１９に定められた耐久力試験にて、速度７２ｋｒ′ｒ
１／ｈ時のトレッドショルダーのベルト端部の温度を測
定した。The above drum test is based on the United States Motor Vehicle Safety Standards (FMVSS).
In the durability test specified in 119, the speed was 72 kr'r.
The temperature at the belt end of the tread shoulder at 1/h was measured.
実走テストは、各タイヤをトレーラ−の車輪に装着して
走行し、ショルダ一部の正常摩耗部とシ第 ２ 表
ヨルダ一部外側のリブの早期摩耗部の摩耗量の差を求め
、これを異常摩耗性として比較例１のタイヤを１００と
して指数で表わした。指数が小さい程耐偏摩耗性が良好
である。In the actual driving test, each tire was mounted on the wheels of a trailer, and the difference in the amount of wear between the normally worn part of the shoulder part and the prematurely worn part of the outside rib part of the shoulder part in Table 2 was determined. The tire of Comparative Example 1 was expressed as an index with the tire of Comparative Example 1 set as abnormal abrasion property as 100. The smaller the index, the better the uneven wear resistance.
本発明のラジアルタイヤによれば、タイヤのトレッドを
キャップゴムとベースゴムの２層により構成し、ベース
ゴムを従来の２層構造のトレッドより、硬いゴム組成物
により構成したために、キャップゴムの動きが抑制され
、トレッドの偏摩耗を防止することができ、また、ベー
スゴムの補強材としてカーボンブラックと、フェノール
系合成樹脂を用いたため、ベースゴムの硬度を高くして
もその発熱を少なくすることができ、セパレーションを
防止することができる。これにより、タイヤの耐久性を
高めることができる効果がある。According to the radial tire of the present invention, the tread of the tire is composed of two layers, the cap rubber and the base rubber, and the base rubber is composed of a harder rubber composition than the conventional two-layer tread, so that the cap rubber moves. It is possible to suppress uneven wear of the tread, and because carbon black and phenolic synthetic resin are used as reinforcing materials for the base rubber, heat generation can be reduced even if the hardness of the base rubber is increased. and separation can be prevented. This has the effect of increasing the durability of the tire.
更に本発明のタイヤのトレッドは、キャップゴムが摩耗
してその厚みが小さくなるにつれて硬いベースゴムがト
レッド表面に近づき、トレッドゴムの動きが増々抑制さ
れ、偏摩耗が生じなくなる。Furthermore, in the tread of the tire of the present invention, as the cap rubber wears and its thickness decreases, the hard base rubber approaches the tread surface, and the movement of the tread rubber is increasingly suppressed, preventing uneven wear.
トレッドの摩耗が進行してベースゴムがトレッド表面に
露出した場合には、硬いベースゴムは耐摩耗性が大で、
従来の軟いベースゴムを用いた２層構造のトレッドのよ
うにベースゴムの露出後に急激に摩耗する虞れがない。If the tread wear progresses and the base rubber is exposed on the tread surface, the hard base rubber has high wear resistance.
Unlike conventional treads with a two-layer structure using soft base rubber, there is no risk of rapid wear after the base rubber is exposed.
第１図は本発明の耐偏摩耗性の優れたラジアルタイヤの
一例の断面図である。
第４図
手続補正書（自発）
昭和６１年１０月３日FIG. 1 is a sectional view of an example of a radial tire of the present invention having excellent uneven wear resistance. Figure 4 Procedural amendment (voluntary) October 3, 1986
Claims (3)
と、ベルトに接する部分のベースゴムの２層構造よりな
るラジアルタイヤにおいて、該キャップゴムのショアー
Ａ硬度Ｈ＿Ｃ及びベースゴムのシヨアーＡ硬度Ｈ＿Ｂが ５５≦Ｈ＿Ｃ≦７５ ５０≦Ｈ＿Ｂ≦８０ ０．９＜Ｈ＿Ｂ／Ｈ＿Ｃ＜１．２ の条件を満たし、該ベースゴムがゴム分１００重量部に
対しカーボンブラック３０〜７０重量部、フェノール系
合成樹脂０．１〜１０重量部を含むゴム組成物により構
成されたことを特徴とする耐偏摩耗性の優れたラジアル
タイヤ。(1) In a radial tire in which the tread rubber has a two-layer structure of cap rubber on the tread surface portion and base rubber on the portion in contact with the belt, the shore A hardness H_C of the cap rubber and the shore A hardness H_B of the base rubber are 55≦ H_C≦75 50≦H_B≦80 0.9<H_B/H_C<1.2 The base rubber contains 30 to 70 parts by weight of carbon black and 0.1 parts by weight of phenolic synthetic resin per 100 parts by weight of rubber. A radial tire with excellent uneven wear resistance, characterized in that it is made of a rubber composition containing up to 10 parts by weight.
０＜Ｈ＿Ｂ／Ｈ＿Ｃ＜１．２ の範囲にある特許請求の範囲第１項記載の耐偏摩耗性の
優れたラジアルタイヤ。(2) The hardness ratio of the cap rubber and base rubber is 1.
A radial tire with excellent uneven wear resistance according to claim 1, which satisfies the following: 0<H_B/H_C<1.2.
ン−ホルムアルデヒド樹脂である特許請求の範囲第１項
記載の耐偏摩耗性の優れたラジアルタイヤ。(3) The radial tire with excellent uneven wear resistance according to claim 1, wherein the phenolic synthetic resin is a novolak type resorcinol-formaldehyde resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61204665A JPS6361602A (en) | 1986-08-29 | 1986-08-29 | Radial tire having better eccentric-abrasion resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61204665A JPS6361602A (en) | 1986-08-29 | 1986-08-29 | Radial tire having better eccentric-abrasion resistance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6361602A true JPS6361602A (en) | 1988-03-17 |
Family
ID=16494256
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61204665A Pending JPS6361602A (en) | 1986-08-29 | 1986-08-29 | Radial tire having better eccentric-abrasion resistance |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6361602A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0270503A (en) * | 1988-09-07 | 1990-03-09 | Toyo Tire & Rubber Co Ltd | Pneumatic tire |
| JPH11310019A (en) * | 1998-04-30 | 1999-11-09 | Bridgestone Corp | Pneumatic tire for passenger car |
| JP2008114799A (en) * | 2006-11-07 | 2008-05-22 | Sumitomo Rubber Ind Ltd | Pneumatic tire |
| JP2016084046A (en) * | 2014-10-27 | 2016-05-19 | 住友ゴム工業株式会社 | Pneumatic tire |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5243664A (en) * | 1975-09-26 | 1977-04-05 | Toshihiko Satake | Rice milling method for mixing with water |
| JPS5679135A (en) * | 1979-11-16 | 1981-06-29 | Yokohama Rubber Co Ltd:The | Rubber composition |
| JPS56128204A (en) * | 1980-03-14 | 1981-10-07 | Yokohama Rubber Co Ltd:The | Pneumatic tyre |
| JPS57119938A (en) * | 1981-01-19 | 1982-07-26 | Yokohama Rubber Co Ltd:The | Rubber composition and preparation of same |
| JPS598504A (en) * | 1982-06-26 | 1984-01-17 | コンテイネンタル・グミ−ウエルケ・アクチエン・ゲゼルシヤフト | Car pneumatic tire for winter season |
| JPS6012244A (en) * | 1983-07-04 | 1985-01-22 | Mitsubishi Heavy Ind Ltd | Working method for increasing wall thickness of cylindrical body |
-
1986
- 1986-08-29 JP JP61204665A patent/JPS6361602A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5243664A (en) * | 1975-09-26 | 1977-04-05 | Toshihiko Satake | Rice milling method for mixing with water |
| JPS5679135A (en) * | 1979-11-16 | 1981-06-29 | Yokohama Rubber Co Ltd:The | Rubber composition |
| JPS56128204A (en) * | 1980-03-14 | 1981-10-07 | Yokohama Rubber Co Ltd:The | Pneumatic tyre |
| JPS57119938A (en) * | 1981-01-19 | 1982-07-26 | Yokohama Rubber Co Ltd:The | Rubber composition and preparation of same |
| JPS598504A (en) * | 1982-06-26 | 1984-01-17 | コンテイネンタル・グミ−ウエルケ・アクチエン・ゲゼルシヤフト | Car pneumatic tire for winter season |
| JPS6012244A (en) * | 1983-07-04 | 1985-01-22 | Mitsubishi Heavy Ind Ltd | Working method for increasing wall thickness of cylindrical body |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0270503A (en) * | 1988-09-07 | 1990-03-09 | Toyo Tire & Rubber Co Ltd | Pneumatic tire |
| JPH11310019A (en) * | 1998-04-30 | 1999-11-09 | Bridgestone Corp | Pneumatic tire for passenger car |
| JP2008114799A (en) * | 2006-11-07 | 2008-05-22 | Sumitomo Rubber Ind Ltd | Pneumatic tire |
| JP2016084046A (en) * | 2014-10-27 | 2016-05-19 | 住友ゴム工業株式会社 | Pneumatic tire |
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